Hmm… that’s strange because Epson Scan I believe is either gamma 2.2 or 1.8… it should definitely NOT be looking this dark coming out of Epson Scan!!!
Are you certain that you have the document type set to “film” (Scanning Film Negatives with Epson Scan and Negative Lab Pro)… it’s so dark it almost looks like it was just using the regular scanner instead of the film scanner…